Remove FWL_WGTHITTEST_* defines in favour of enum class.

xfa/fxfa/include/xfa_ffwidgethandler.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FXFA_INCLUDE_XFA_FFWIDGETHANDLER_H_
 #define XFA_FXFA_INCLUDE_XFA_FFWIDGETHANDLER_H_
 
 #include <vector>
 
 #include "xfa/fxfa/include/fxfa.h"
 #include "xfa/fxfa/parser/xfa_document.h"
 
 class CXFA_FFDocView;
+enum class FWL_WidgetHit;
 
 class CXFA_FFWidgetHandler {
  public:
   CXFA_FFWidgetHandler(CXFA_FFDocView* pDocView);
   ~CXFA_FFWidgetHandler();
 
   CXFA_FFWidget* CreateWidget(CXFA_FFWidget* hParent,
                               XFA_WIDGETTYPE eType,
                               CXFA_FFWidget* hBefore = NULL);
 
@@ skipping 31 matching lines @@
   FX_BOOL OnRButtonDblClk(CXFA_FFWidget* hWidget,
                           uint32_t dwFlags,
                           FX_FLOAT fx,
                           FX_FLOAT fy);
 
   FX_BOOL OnKeyDown(CXFA_FFWidget* hWidget,
                     uint32_t dwKeyCode,
                     uint32_t dwFlags);
   FX_BOOL OnKeyUp(CXFA_FFWidget* hWidget, uint32_t dwKeyCode, uint32_t dwFlags);
   FX_BOOL OnChar(CXFA_FFWidget* hWidget, uint32_t dwChar, uint32_t dwFlags);
-  uint32_t OnHitTest(CXFA_FFWidget* hWidget, FX_FLOAT fx, FX_FLOAT fy);
+  FWL_WidgetHit OnHitTest(CXFA_FFWidget* hWidget, FX_FLOAT fx, FX_FLOAT fy);
   FX_BOOL OnSetCursor(CXFA_FFWidget* hWidget, FX_FLOAT fx, FX_FLOAT fy);
   void RenderWidget(CXFA_FFWidget* hWidget,
                     CFX_Graphics* pGS,
                     CFX_Matrix* pMatrix = NULL,
                     FX_BOOL bHighlight = FALSE);
   FX_BOOL HasEvent(CXFA_WidgetAcc* pWidgetAcc, XFA_EVENTTYPE eEventType);
   int32_t ProcessEvent(CXFA_WidgetAcc* pWidgetAcc, CXFA_EventParam* pParam);
 
  protected:
   CXFA_Node* CreateWidgetFormItem(XFA_WIDGETTYPE eType,
@@ skipping 40 matching lines @@
                               uint32_t dwFlags,
                               FX_FLOAT fInsets[4]) const;
   CXFA_Node* CreateValueNode(XFA_ELEMENT eValue, CXFA_Node* pParent) const;
   CXFA_Document* GetObjFactory() const;
   CXFA_Document* GetXFADoc() const;
 
   CXFA_FFDocView* m_pDocView;
 };
 
 #endif  //  XFA_FXFA_INCLUDE_XFA_FFWIDGETHANDLER_H_